Why is your Car stalling at normal operating temperature?

Depends on year, make, and model. Just because the car stalls doesnt mean that its the temperature that is the problem. Can be hundreds of reasons. A common one is the alternator isn't charging the battery which is therefor not running the engine. This causes your engine to not get the electrical service that it needs to stay running. Mercedes, i noticed... that going to cost quite a bit to get fixed. Oh well, I hope that help you.